ES6 default export value ?

gistfile1.md

I've been using babel on a few projects, and on my last project I got myself with this question;

I have a scan function where I want to set 2 default values

export default function scan({
  tmpFolder = "./tmp", 
  verbose = false
}){
// function body
}

When importing the module into my bin project I have to set an empty {} as param

var scan = require('scan');
scan({})

Otherwise, if I dont set it;

var scan = require('scan');
scan()

i'm getting an error;

var _ref$tmpFolder = _ref.tmpFolder;
                           ^
TypeError: Cannot read property 'tmpFolder' of undefined

Why am I getting an error if I don't set an empty {}? Shouldnt be {tmpFolder = "./tmp",verbose = false} the default value ? Is this a Babel issue or is it wrong to don't set an empty {} in this case ?

:)